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      6.65.&nbsp;Cleaning Up
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        Linux From Scratch - Version 7.3
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        Chapter&nbsp;6.&nbsp;Installing Basic System Software
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      <h1 class="sect1">
        <a id="ch-system-revisedchroot" name=
        "ch-system-revisedchroot"></a>6.65. Cleaning Up
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      <p>
        From now on, when reentering the chroot environment after exiting,
        use the following modified chroot command:
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<kbd class="command">chroot "$LFS" /usr/bin/env -i \
    HOME=/root TERM="$TERM" PS1='\u:\w\$ ' \
    PATH=/bin:/usr/bin:/sbin:/usr/sbin \
    /bin/bash --login</kbd>
</pre>
      <p>
        The reason for this is that the programs in <code class=
        "filename">/tools</code> are no longer needed. Since they are no
        longer needed you can delete the <code class="filename">/tools</code>
        directory if so desired.
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          Note
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          Removing <code class="filename">/tools</code> will also remove the
          temporary copies of Tcl, Expect, and DejaGNU which were used for
          running the toolchain tests. If you need these programs later on,
          they will need to be recompiled and re-installed. The BLFS book has
          instructions for this (see <a class="ulink" href=
          "http://www.linuxfromscratch.org/blfs/">http://www.linuxfromscratch.org/blfs/</a>).
        </p>
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      <p>
        If the virtual kernel file systems have been unmounted, either
        manually or through a reboot, ensure that the virtual kernel file
        systems are mounted when reentering the chroot. This process was
        explained in <a class="xref" href="kernfs.html#ch-system-bindmount"
        title="6.2.2.&nbsp;Mounting and Populating /dev">Section&nbsp;6.2.2,
        &ldquo;Mounting and Populating /dev&rdquo;</a> and <a class="xref"
        href="kernfs.html#ch-system-kernfsmount" title=
        "6.2.3.&nbsp;Mounting Virtual Kernel File Systems">Section&nbsp;6.2.3,
        &ldquo;Mounting Virtual Kernel File Systems&rdquo;</a>.
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